1987/09/21 Caterpillar


Single Lip Hydrodynamic Seal Used In Water Pumps{1300,1361}

Usage:


3300 Family Of Engines

SUPPLEMENT: 10/26/87

SERVICE MAGAZINE; SEPTEMBER 21, 1987; PAGE 10; "Single Lip Hydrodynamic Seal Used In Water Pumps" on 3300 Family of Engines. In Step 2, cross out "impeller" and replace it with "drive gear".

--------------- END SUPPLEMENT ---------------

Description of Change: A new single lip seal with hydrodynamic grooves is used in the water pump on the 3300 Family of engines. The hydrodynamic grooves are on the new seal lip, and force any oil back into the engine as the seal and shaft rotate. See illustration.


New seal design used in the water pump on the 3300 Family of engines.

Adaptable To: The new 8C5210 Seal can be used as a direct replacement for the former 8T5919 Seal Group which is still serviced for other applications. Part number of the 2W8002 Water Pump Group did not change.

When the new seal is installed, do the following:

1. Install the seal DRY, and do NOT put oil on the shaft.

2. Put the lip toward the pump drive gear so the grooves will direct the oil toward the engine.

3. Replace the 4N5834 Filter in the weep hole every time a new seal is installed.

Caterpillar Information System:

1987/09/21 New Hydraulic Steering Mounting Group Available{4306}
1987/09/21 New Alternator Used In Charging Alternator Groups{1405}
1987/09/21 New Adapters Available For Metric Test Ports So That SAE Connectors Can Be Used{0784}
1987/09/14 Oil Flow Increased For Inlet Valve Lubricator {1105}
1987/09/14 New Digital Pyrometer Which Incorporates High Exhaust Temperature Alarm Now Used {1606,7412,7450,7466}
1987/09/14 New Piston Cooling Jets Used {1213,1214}
1987/09/14 Mid-Life Bearing Maintenance Recommendations {1203}
1987/09/14 New Turbochargers Have Several Improvements {1053,1066}
1987/09/14 Remanufactured 3208T Economy Truck Engine Available {1000}
1987/09/14 Four More Remanufactured Fuel Pump And Governor Groups Available {1286}
1987/09/14 Remanufactured Air Conditioner Compressor Available {1802}
1987/09/07 New O-Ring Seals Used In Water Lines{1350}
1987/09/21 New Timing Gear Housing Used In Front Housing Groups To Help Prevent Oil Leaks{1162,1166}
1987/09/28 Thinner Piston Retaining Nuts Are Used In Hydraulic Cylinders {7562}
1987/09/28 Double Lip Seal With Hydrodynamic Grooves Used At Rear Of Crankshaft {1161,1200}
1987/09/28 Either Type Sleeve Satisfactory For Governor Servo Piston {1264}
1987/09/28 New Steel Fuel Injection Pump Lifters Should Not Be Mixed With Aluminum Lifters {1281,1250}
1987/09/28 New Special Instruction, "Using the PEEC Screen Map(s)" {0374}
1987/09/28 Engine Oil Coolers Have Rubber End Sheets In Place Of Brazed Sheets {1300,1378}
1987/10/05 Individual Parts Of Caterpillar Hydraulic Gear Pumps Are Available{5073}
1987/10/05 New Product Support Information Available For Electric Power Generation (EPG){4450,0374}
1987/10/05 Replacement Thermostats Available For Jacket Water Heaters{1383}
1987/10/12 Piston And Camshaft Changes{1214,1210,1200}
1987/10/19 Check Plastic Water Sleeve If Engine Experiences Severe Overheating{1380,1350}
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